Was it this?
Lol jk. But your post reminded me of Cloverfield the movie somehow.
And as for the bugs
Japanese Hornets - insane and definitely wouldnt want to see one.
June Bugs - so annoying, they always hit my window or cling onto the screen door.
Cicadas - i was thinking the exact same thing, but if its not that, then honestly i am not sure what it is.
BUT I went camping a few days ago and I saw these HUGE bugs that flew vertically like upwards like a Harrier and they had ENORMOUS curly antennas and kinda sounded like what you described. No idea what they are called, but they came out at night.